Hose-clamp.



No. 875,019. PATENTED 13m" 31, 1907. H. A. WAHLERT. HOSE CLAMP! APPLICATION FILED JULY 11, 1907.

INVENIOR:

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AENT

HENRY A. WAHLERT, OF ST. LOUIS, MISSOURI.

HOSE-CLAMP.

Specification of Letters Patent.

Patented Dec; 31, 1907.

Application filed July 11. 1907- Serial No. 383.277.

To all whom it may concern:

Be it known that I, HENRY A. WAHLERT, a citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful lm rovements in Hose- Clamps, of which the fol owing is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in hose-clamps; and it consists in the novel construction of clamp more fully set forth in the specification and pointed .out in the claims.

In the drawings, Figure 1 is a side elevation of one member of a hose coupling, with parts broken away, showing my invention applied thereto; Fig. 2 is an end View of the clamp shown in a closed position; Fig. 3 is a similar view showing the clamp artially open; and Fig. 4 is an edge view of t ie clamp.

The object of my invention is to provide a clamp for securing the end of a rubber or leather or equivalent hose to the nipple of a coupling member connecting two sections of hose, though the clamp herein shown is not necessarily restricted in its application to a coupling member as it can be used for secur ing a hose to any tubular formation over which the hose can be passed. a

A further object is to provide a clamp which will exert a maximum grip on the hose, all as will hereinafter more fully appear from a detailed description of the invention which is as follows:

Referring to the drawings, 1 represents one member of a hose coupling (of which there are many varieties) the same being provided with a tubular nipple or stem 2 preferably with an annular bead or peripheral enlargement 3 to insure a firm grip on the hose h passed over the nipple. The clamp forming the subject matter of the present invention is applied to the hose between the bead 3 and the polygonal head. of the coupling member. This clamp is preferably composed of two sections 0 0 respectively, separable at what constitutes the hinge joint, said joint comprising an outwardly curved finger or claw 4 on one end of the section 0 (which may be termed the male section), passed through an opening of the female section 0 and engaging the rounded terminal wall 5 of said opening, said wall serving as a hingle pin for the joint. The opposite end e section a terminates in a nose 6 which is limited in one direction by the shoulder formation 7 on the section 0'. The outer surface of the nose is provided with serrations or teeth 8 which engage corresponding teeth 8 on the under surface of the adjacent terminal of the section 0.

The inner curved surfaces of, the sections 0, c; are describedfrom the center or axis of the clamp, (Fig. 2) but the arc or curve defining the path of disposition of the teeth 8, 8, is swung from the bin e joint as a center (Fig. 3). The purpose 0 this is obvious, and its object is to secure perfect and uniform engagement ofthe teeth 8 with the teeth 8 as the female clamp section 0 is swun toward and over the nose 6 of the male in the act of clamping the hose h to the nipple 2. Once the necessary grip is obtained, the interlocked teeth prevent the clamp sections from slipping or loosening under the tension exerted by the compressed elastic hose, and the two sections can be permanently secured by the locking bolt 9 and nut 10, the bolt being passed through the lugs 11, 11 of the respective sections. The teeth 8, 8. are on the order of ratchet teeth, the female section slipping freely over the male by a closing movement of the sections, but lookin for an o ening or expanding movement. 0 course t e sections need not necessarily be separable at the joint.

Having described my invention What I claim is:

1. A hose-clamp comprising two sections hinged at one end, lugs terminating the opposite ends, a nose formation on one of the sections having serrations disposed on its outer surface, corresponding serrations formed on the inner surface of the opposite section, said serrations being disposed along an are described from the joint between the sections as a center, substantially as set forth.

2. A hose clamp comprising two substantially semi-circular sections hinged together at one end, their inner surfaces being disposed about arcs described from the center of the clamp, lugs terminating the opposite ends of the sections, a nose formation extending beyond the lug of one section and having outer ratchet teeth disposed transversely to the lane of oscillation of the sections, a shou der on the opposite section for engaging the end-of the nose, at similar series of\ In testimony whereof Iafiix my signature, ratchet teeth forms? on the innerhsurfmie of in presence of two Witnesses. theo osite section or engagin t eteet on the n o sle aforesaid, the edges of the teeth be- HENRY WAHLERT' 5 ing disposed along & curve describedfrom' Witnesses:

the hinge-joint of the sections as a. center, EMIL STAREK, substantially as set forth. T. EVANS. 

